BLOCK ISLAND STATE AP, RHODE ISLAND

Period of Record General Climate Summary - Growing Degree Days

Station:(370896) BLOCK ISLAND STATE AP
From Year=1927 To Year=2012
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 21 13 41 180 446 709 933 926 713 465 215 58 4720
40 S 21 34 75 255 701 1410 2343 3269 3982 4447 4662 4720 4720
45 M 5 2 9 74 292 559 778 771 563 315 109 19 3494
45 S 5 6 15 89 381 940 1718 2489 3052 3367 3475 3494 3494
50 M 0 0 1 20 152 409 623 616 413 181 41 4 2460
50 S 0 0 1 22 174 583 1206 1822 2235 2415 2456 2460 2460
55 M 0 0 0 4 55 261 468 461 266 80 10 0 1605
55 S 0 0 0 4 59 320 788 1249 1515 1595 1605 1605 1605
60 M 0 0 0 1 13 128 313 306 137 23 1 0 922
60 S 0 0 0 1 14 142 455 761 898 920 922 922 922
Corn Growing Degree Days
50 M 4 2 9 56 189 411 622 615 417 210 69 14 2619
50 S 4 6 15 71 260 671 1293 1908 2325 2536 2605 2619 2619
M = Monthly Data
S - Running sum of monthly data.
Growing Degree Day units are computed as the difference between the daily average temperature and the base temperature. (Daily Ave. Temp. - Base Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is above the base temperature. Negative numbers are discarded. Example: If the days high temperature was 95 and the low temperature was 51, the base 60 heating degree day units is ((95 + 51) / 2) - 60 = 13. This is done for each day of the month and summed.
Corn Growing Degree Day units have the limitations that the maximum daily temperatures greater than 86 F are set to 86 F and minimums less than 50 F are set to 50 F.
Table updated on Oct 31, 2012
Months with 5 or more missing days are not considered
Years with 1 or more missing months are not considered
Western Regional Climate Center, wrcc@dri.edu